tests.py 文件源码

def test_incr(self):
        # Cache values can be incremented
        cache = self.cache
        cache.set('answer', 41)
        self.assertEqual(cache.incr('answer'), 42)
        self.assertEqual(cache.get('answer'), 42)
        self.assertEqual(cache.incr('answer', 10), 52)
        self.assertEqual(cache.get('answer'), 52)
        self.assertEqual(cache.incr('answer', -10), 42)
        with self.assertRaises(ValueError):
            cache.incr('does_not_exist')